Didn't the Xbox360 have COD4, Halo3, and Bioshock all come out in the second year of the console's life and all sold amazingly well? Weren't those three games part of the reason why the 360 had such a good holiday season? If both Killzone and Resistance are good solid games, Sony probably has nothing to worry about sales wise for each game. Plus they would both really help PS3 sales during the biggest sales season of the year.
My Top 5:
Shadow of the Colossus, Metal Gear Solid 3, Shenmue, Skies of Arcadia, Chrono Trigger
My 2 nex-gen systems: PS3 and Wii
Prediction Aug '08: We see the PSP2 released fall '09. Graphically, it's basically the same as the current system. UMD drive ditched and replaced by 4-8gb on board flash memory. Other upgrades: 2nd analog nub, touchscreen, blutooth, motion sensor. Design: Flip-style or slider. Size: Think Iphone. Cost: $199. Will be profitable on day 1.